12-Letter Words Matching O_____P_____

There are 21 12-letter words that match O_____P_____. 10 are common words, such as OBSTREPEROUS and OUTCROPPINGS. A rarer one is OZONOSPHERES. In this set, R is the most frequent open letter (19 words). 4 words contain a doubled letter.

Full list 21

obstreperousoutcroppingsovercapacityoveremphasesoveremphasisoverexposingoverexposureoverpopulateoversuppliedoversuppliesorographicaloveremphaticoverexplicitoctapeptidesonychophoranoutcompetingoverexpandedoverexplainsoverexploitsoverreportedozonospheres

About this list

Words
21 (10 common words)
Common example
obstreperous
Rare example
ozonospheres
Doubled letters
4
Ending in S
9
Most frequent letter
R (19)

Questions

How many 12-letter words matching o_____p_____ are there?

21. 10 of them are common words.

What is a common example?

OBSTREPEROUS is among the common words in this set.